The easiest way to do this on a budget, is to buy a Cherry corp. keyboard. You can always buy or swap for the switches and put them in without any need for soldering. Try it out for a while to figure out the switch type you genuinely like.
Only when you are sure you know what you want, do you spend serious money.
That beats these people who spend like 400, 500 for a keyboard and try to sell it after a few weeks because they didn't like the layout or the switch type.
I simply don't know how to assemble keyboards, so I'd have to pay for someone to do that for me, which is rather expensive. I also don't want to make a custom before I've tried clears. Gonna try to snatch one of the new CM Storm boards with clears when they come. If I don't like it, i'll look into modding my QFR with 62g Ergo-Clears.